Is Explorer.exe Being Blocked by Windows Defender? What You Need to Know

Recently, I encountered a puzzling situation where Windows Defender flagged and blocked explorer.exe on two separate occasions within a single day. This has raised several concerns for me regarding the legitimacy of the process, especially since I noticed that it was consuming about 642 MB of RAM on my computer, which has a total of 8 GB.

Given the circumstances, I find myself at a crossroads of uncertainty, wondering if I might be facing malware or if there’s another explanation for this behavior. Naturally, this situation has sparked a bit of apprehension.

To address my concerns, I took proactive steps by running a scan with Malwarebytes to check for any malicious activity on my system. Additionally, I terminated the explorer.exe task temporarily to see if that shed any light on the situation. To my relief, everything appeared legitimate during these checks.

If you find yourself in a similar predicament, it’s essential to remain vigilant and take appropriate measures. Here’s a brief overview of what you can do if you suspect that explorer.exe may be causing issues on your computer:

  1. Run a Full Malware Scan: Use reputable antivirus and anti-malware software to perform a thorough check on your system.

  2. Monitor Resource Usage: Keep an eye on your system’s resource usage through the Task Manager. If you notice any unusual spikes, it may indicate other underlying issues.

  3. Research and Seek Help: Don’t hesitate to consult online forums or support groups if you’re unsure about your findings. You can often find valuable insights from others who have experienced similar issues.

  4. Keep Your System Updated: Make sure your operating system and all security software are up to date to protect against potential threats.

While encountering unexpected alerts like the ones from Windows Defender can be alarming, staying informed and taking the right steps can significantly mitigate risks. If you have any experiences or advice on this matter, feel free to share it in the comments below!

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One Comment

  1. It’s understandable to be concerned when Windows Defender flags explorer.exe, especially if it occurs multiple times within a day. Generally, explorer.exe is a legitimate Windows process responsible for the taskbar, desktop, and file management, but malware can sometimes disguise itself as this process.

    Since you’ve already run Malwarebytes and temporarily terminated explorer.exe without issues, it’s a positive sign that the process might be legitimate. However, to ensure your system’s safety, here are some additional steps:

    • Verify the File Location: Navigate to C:\Windows\explorer.exe and check that the file is located in the Windows directory. Right-click the file, select Properties, and then the Details tab. The legitimate explorer.exe should be signed by Microsoft.
    • Perform a Full System Scan: Use both Windows Defender and Malwarebytes to run comprehensive scans. Ensure your definitions are up to date.
    • Check for Suspicious Activity: Use the Process Monitor (Procmon) tool to observe real-time activity of explorer.exe and identify any unusual behavior or network connections.
    • Review Event Logs: Open Event Viewer (

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